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ACI-ASTM CB7Cu-2 Steel vs. AWS E308LMo

Both ACI-ASTM CB7Cu-2 steel and AWS E308LMo are iron alloys. They have 86% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CB7Cu-2 steel and the bottom bar is AWS E308LMo.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 5.7 to 11
40
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
78
Tensile Strength: Ultimate (UTS), MPa 960 to 1350
580

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Melting Completion (Liquidus), °C 1430
1440
Melting Onset (Solidus), °C 1380
1400
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 17
16
Thermal Expansion, µm/m-K 11
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 13
19
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 2.6
3.8
Embodied Energy, MJ/kg 38
53
Embodied Water, L/kg 130
160

Common Calculations

PREN (Pitting Resistance) 15
28
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 34 to 48
21
Strength to Weight: Bending, points 28 to 35
20
Thermal Diffusivity, mm2/s 4.6
4.2
Thermal Shock Resistance, points 32 to 45
15

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.040
Chromium (Cr), % 14 to 15.5
18 to 21
Copper (Cu), % 2.5 to 3.2
0 to 0.75
Iron (Fe), % 73.6 to 79
59.6 to 70.5
Manganese (Mn), % 0 to 0.7
0.5 to 2.5
Molybdenum (Mo), % 0
2.0 to 3.0
Nickel (Ni), % 4.5 to 5.5
9.0 to 12
Niobium (Nb), % 0 to 0.35
0
Nitrogen (N), % 0 to 0.050
0
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030